Selection collapses unexpectedly when clicking outside contenteditable

Phenomenon

When a range of text is selected inside a contenteditable element, clicking outside the element collapses the selection to a caret position inside the editable region instead of clearing the selection entirely.

Reproduction example

1. Focus the editable area.
2. Type a few words across multiple lines.
3. Drag to select part of a line or multiple lines.
4. Click outside the editable area, for example on the page background.

Observed behavior

• The selection collapses to a single caret position inside the editable element.
• The range is not cleared, which can cause confusion for users relying on visual feedback.

Expected behavior

• The selection is cleared entirely when the element loses focus, or at least behaves similarly to native text fields in the same browser and OS combination.

Notes

• This behavior can affect keyboard shortcuts (for example, copy or delete) if they are bound to the selection state.